请输入您要查询的字词:
单词
NGFN 1957
释义
NGFN 1957
Encyclopedia
工学
重力测量
释
National Gravity Fundamental Network 1957; NGFN 1957
1957国家重力基准网
中国建立的第一个国家重力控制网。共有27个基本重力点(包括南京、青岛、上海三个摆仪点与青岛市内的二点)和80个一等重力点。
随便看
isomorphic manifold
isomorphic mapping
isomorphic measurable spaces
isomorphic measure space
isomorphic model
isomorphic morphism
isomorphic normal series
isomorphic normed space
isomorphic object
isomorphic operator
isomorphic ordered set
isomorphic posets
isomorphic quadratic form
isomorphic quadratic space
isomorphic refinement
isomorphic relation
isomorphic representation
isomorphic resolution
isomorphic responsibility
isomorphic ring
isomorphic scheme
isomorphic set
isomorphic simplicial complex
isomorphic space
isomorphic structure
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
Copyright © 2000-2023 Sciref.net All Rights Reserved
京ICP备2021023879号
更新时间:2025/7/29 21:43:14